Who lives longest? CIA's top 20 nations for life expectancy

What's the secret to a long life? Maybe where you live. Countries that offer the highest quality of life tend to have the longest-living citizens, says the Central Intelligence Agency, which has tracked the average life expectancy at birth for every country in the world.

Where do people live the longest? Keep clicking to see the CIA countdown - you might be surprised at where the U.S. ranks...

Credit: Flickr/Pedro Simoes

20. Bermuda

Vacation destination or home? Those who live in this favorite beach getaway can expect a long life. Bermuda kicks off the list of countries with the longest-living residents with an average life expectancy of 80.71 years.

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19. Anguilla

Average life expectancy: 80.87 years

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18. Iceland

Average life expectancy: 80.90 years

Credit: Flickr/pocius

17. Israel

Average life expectancy: 80.96 years

Credit: istockphoto

16. Sweden

Average life expectancy: 81.07 years

Credit: istockphoto

16. Switzerland

Average life expectancy: 81.07 years

Credit: Monica DyBuncio

14. Spain

Average life expectancy: 81.17 years

Credit: Flickr/u-suke

13. France

Average life expectancy: 81.19 years

Credit: Flickr/n_willsey (Creative Commons)

12. Canada

Average life expectancy: 81.38 years

Credit: istockphoto

12. Jersey

Average life expectancy: 81.38 years

Credit: Wikimedia Commons

10. Italy

Average life expectancy: 81.77 years

Credit: Monica DyBuncio

9. Australia

Average life expectancy: 81.81 years

Credit: istockphoto

8. Hong Kong

Average life expectancy: 82.04 years

Credit: Wikimedia Commons

7. Singapore

Average life expectancy: 82.14 years

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6. Guernsey

Average life expectancy: 82.16 years

Credit: Wikimedia Commons

5. Japan

Average life expectancy: 82.25 years

Credit: Flickr/Marc Veraart

4. Andorra

Average life expectancy: 82.43 years

Credit: Flickr/Outi-Maaria Palo-oja

3. San Marino

Average life expectancy: 83.01 years

Credit: Flickr/Outi-Maaria Palo-oja

2. Macau

Average life expectancy: 84.41 years

Credit: Flickr/Outi-Maaria Palo-oja

1. Monaco

The second smallest country in the world boasts the highest life expectancy, with citizens living an average of 89.73 years. Good things come in small packages?

Credit: Flickr/Outi-Maaria Palo-oja

50. United States

Wondering where the U.S. is? Not in the top 20 - the CIA pegs America at number 50 on its life expectancy list. On average, Americans live 78.37 years.